| /* |
| * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.jndi.ldap; |
| |
| import java.net.URLClassLoader; |
| import java.net.MalformedURLException; |
| import java.security.AccessControlContext; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import sun.misc.SharedSecrets; |
| |
| final class VersionHelper12 extends VersionHelper { |
| |
| // System property to control whether classes may be loaded from an |
| // arbitrary URL code base. |
| private static final String TRUST_URL_CODEBASE_PROPERTY = |
| "com.sun.jndi.ldap.object.trustURLCodebase"; |
| |
| // Determine whether classes may be loaded from an arbitrary URL code base. |
| private static final String trustURLCodebase = |
| AccessController.doPrivileged( |
| new PrivilegedAction<String>() { |
| public String run() { |
| return System.getProperty(TRUST_URL_CODEBASE_PROPERTY, |
| "false"); |
| } |
| } |
| ); |
| |
| VersionHelper12() {} // Disallow external from creating one of these. |
| |
| ClassLoader getURLClassLoader(String[] url) |
| throws MalformedURLException { |
| ClassLoader parent = getContextClassLoader(); |
| /* |
| * Classes may only be loaded from an arbitrary URL code base when |
| * the system property com.sun.jndi.ldap.object.trustURLCodebase |
| * has been set to "true". |
| */ |
| if (url != null && "true".equalsIgnoreCase(trustURLCodebase)) { |
| return URLClassLoader.newInstance(getUrlArray(url), parent); |
| } else { |
| return parent; |
| } |
| } |
| |
| Class<?> loadClass(String className) throws ClassNotFoundException { |
| ClassLoader cl = getContextClassLoader(); |
| return Class.forName(className, true, cl); |
| } |
| |
| private ClassLoader getContextClassLoader() { |
| return AccessController.doPrivileged( |
| new PrivilegedAction<ClassLoader>() { |
| public ClassLoader run() { |
| return Thread.currentThread().getContextClassLoader(); |
| } |
| } |
| ); |
| } |
| |
| Thread createThread(final Runnable r) { |
| final AccessControlContext acc = AccessController.getContext(); |
| // 4290486: doPrivileged is needed to create a thread in |
| // an environment that restricts "modifyThreadGroup". |
| return AccessController.doPrivileged( |
| new PrivilegedAction<Thread>() { |
| public Thread run() { |
| return SharedSecrets.getJavaLangAccess() |
| .newThreadWithAcc(r, acc); |
| } |
| } |
| ); |
| } |
| } |